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angle chord relationships
作者：
Stephen Teal
GeoGebra
最新資源
WC 2018
Erdős's problem #503, n=3
Loyd's Two-Greek-Crosses-to-a-Square Dissection
Measuring Cup
bewijs stelling van Pythagoras
探索資源
FaithLaos5
Parallel Lines with a Transversal
Archimedes' Triangle
Circle Geoboard 2D
Transformations Activity 2
探索主題
角柱
餘弦
作圖
反射
平行四邊形